Bolt-action firearm



Filed Nov. 28, 1925 2 Sheets-Sheet 1 v 1,631,242 n 7 1927' F. F. BURTON v BOLT ACTION FIREARM Filed No v. 28, 1925 2 Sheets-Sheet 2 so STATESPATENTO FRANK r. BURTON, or MOUNT CARMEL, CONNECTICUT, AssIeNon To wINcHEsTEnnn-T PEATING ARMS '00., or NEw'HAvnN; CONNECTICUT, A CORPORATION.

BOLT-ACTION FIREARM.-

Application filed November 28, 1925. Serial No. 71,896.

Fig. 1 is a broken view in right-hand side elevation of a bolt-action firearm embodying my invention, the parts being shown in the closed and locked position of the bolt,

Fig. 2 is a view thereof in transverse section on the line 22 of Fig. 1.

Fig. 3 is a corresponding view, showing the bolt as unlocked by the lifting of its handle.

F 4 is a broken, plan view of my improved firearm, with the forward portion of the receiver shown in horizontal section.

Fig. 5 is a detached, plan view of the breech-bolt, shown as stripped.

Fig. 6 is an end view thereof. My invention relates to an improved boltactionfirearm, the object being to produce a simple, reliable, rugged and easy-working.

arm constructed with particular reference to preventing the bolt from cramping in either its forward and rearward excursions.

With these ends in view, my invention consists in a bolt-action firearm characterized by having its bolt formed with a guidelug located between its ends and riding upon a bearing-shelf within the receiver of the arm, so as to prevent its being cramped in its forward or rearward excursions.

My invention further consists in a boltaction firearm characterized as above. set forth and having further details of construction as will be hereinafter described and pointed out in the claim. 7

In carrying out my lnvention, as herein shown, the reciprocating-bolt 10 is provided on its left-hand side, at about midway of its length, with anintegral guide-lug 11 having a long bearing-face 12 which, when the bolt is turned throughan' angle of 90 and, therefore, into its unlocked position, rides upon the horizontal face of a bearingshelf 13, as shown in Fig. 3, the said shelf being formed integral with the receiver 14 (which may be of any approved construction in other respects) and projecting -inwardly from the left-hand wall thereof and extending substantially the entire length thereof.

At its forward end, the bolt 10 is provided.

with two integral, oppositely-located locking-lugs 15 and-16 entering, when the bolt 16 respectively co-a'ct to lock the bolt in its sald closed position. The bottom face 20 of the locking-lug 15 is constructed to lie in the plane of the bearing-face12 ofthe'guidelug 11, so that in the forward andrearward excursions of the bolt, the said faces, 12 and 20 ride simultaneously upon the bearingshelf 13 aforesaid.

Under this construction, the bolt is e fleca tively prevented from cramping, since. it is supported not only atits forward end by the locking-lug 15, but also midway of its length by the guide-lugll, which, on account of its location. about midway the length of the bolt, forms a completely. effectlve guide therefor. .By preference, the guiding action.

of the guide-lug 11 and -locking-lug 15 is supplemented by constructing'the primary extraction-cam 21 integral'with the rear endof the bolt,.so that its end-face 22 also lies in the plane of the faces 12 and 20,as shown in Fig. 5, whereby the bolt,'in its forward and rearward excursions, is supported in a. supplementary way' by the end-face 22 of the e traction-cam. However, it is not imperatwo that the .face.22 just described shall lie in the'pla'ne of thefaces 12 and 20, though I i i consider it a desirable construction. I

At its rear end, the bolt .is provided with an operating-handle 23, made integral there with and ofisetting to the right. To the rear of this handle, the'bolt is provided with a pivotal safety lock 24 having an offsetting thumb-piece 25 also extending to the right.

As shown, the trigger-guard 26,' receiver 14, and the stock 27 are bound together by means of three guardscrews 28, 29 and 8.0, i

which serve to insure the linear of the organizatlon. I claim:

integrity camlug at its rear end, and a guide-member positioned between the said lugs; the said lugs and the said guide-member being adapted to co-operate with the said guide-surface of the said receiver, whereby the breech-bolt isprevented from cramping in the said receiver when being reciprocated therein.

ice I" In testimony whereof, I have signedthis specification. i

FRANK F.'BURTON.

957..., In a bolt-action firearm,the combination 

